package com.linchong.concurrency.immutable;

import com.google.common.collect.Maps;
import lombok.extern.slf4j.Slf4j;

import java.util.Collections;
import java.util.Map;

/**
 * @author linchong
 * @version 1.0
 * @Date: 2020-12-08 18:15
 * @Description: ImmutableExample1$
 */
@Slf4j
public class ImmutableExample2 {

	private  static Map<Integer,Integer> map = Maps.newHashMap();

	static{
		map.put(1,2);
		map.put(3,4);
		map.put(5,6);
		map = Collections.unmodifiableMap(map);
	}

	public static void main(String[] args) {
		map.put(1,3);
		log.info("{}",map.get(1));
	}

}
